KR20160143773A - 통신 네트워크에서 전파 지연을 결정하기 위한 방법 및 장치 - Google Patents

통신 네트워크에서 전파 지연을 결정하기 위한 방법 및 장치 Download PDF

Info

Publication number
KR20160143773A
KR20160143773A KR1020167031163A KR20167031163A KR20160143773A KR 20160143773 A KR20160143773 A KR 20160143773A KR 1020167031163 A KR1020167031163 A KR 1020167031163A KR 20167031163 A KR20167031163 A KR 20167031163A KR 20160143773 A KR20160143773 A KR 20160143773A
Authority
KR
South Korea
Prior art keywords
signal
time reference
path
transceiver unit
time
Prior art date
Application number
KR1020167031163A
Other languages
English (en)
Korean (ko)
Inventor
스테파노 루피니
스테파노 스트라카
파비오 카발리에레
Original Assignee
텔레호낙티에볼라게트 엘엠 에릭슨(피유비엘)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 텔레호낙티에볼라게트 엘엠 에릭슨(피유비엘) filed Critical 텔레호낙티에볼라게트 엘엠 에릭슨(피유비엘)
Publication of KR20160143773A publication Critical patent/KR20160143773A/ko

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0635—Clock or time synchronisation in a network
    • H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
    • H04J3/0658—Clock or time synchronisation among packet nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0852—Delays
    • H04L43/0858—One way delays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7073—Synchronisation aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/073—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an out-of-service signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2575—Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
    • H04B10/25752—Optical arrangements for wireless networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2575—Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
    • H04B10/25752—Optical arrangements for wireless networks
    • H04B10/25753—Distribution optical network, e.g. between a base station and a plurality of remote units
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2575—Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
    • H04B10/25752—Optical arrangements for wireless networks
    • H04B10/25758—Optical arrangements for wireless networks between a central unit and a single remote unit by means of an optical fibre
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/204—Multiple access
    • H04B7/212—Time-division multiple access [TDMA]
    • H04B7/2125—Synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2662—Arrangements for Wireless System Synchronisation
    • H04B7/2671—Arrangements for Wireless Time-Division Multiple Access [TDMA] System Synchronisation
    • H04B7/2678—Time synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0635—Clock or time synchronisation in a network
    • H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
    • H04J3/0644—External master-clock
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0635—Clock or time synchronisation in a network
    • H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
    • H04J3/0647—Synchronisation among TDM nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0635—Clock or time synchronisation in a network
    • H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
    • H04J3/0647—Synchronisation among TDM nodes
    • H04J3/065—Synchronisation among TDM nodes using timestamps
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0635—Clock or time synchronisation in a network
    • H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
    • H04J3/0658—Clock or time synchronisation among packet nodes
    • H04J3/0661—Clock or time synchronisation among packet nodes using timestamps
    • H04J3/0667—Bidirectional timestamps, e.g. NTP or PTP for compensation of clock drift and for compensation of propagation delays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0635—Clock or time synchronisation in a network
    • H04J3/0676—Mutual
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0852—Delays
    • H04L43/0864—Round trip delays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/10—Active monitoring, e.g. heartbeat, ping or trace-route
    • H04L43/106—Active monitoring, e.g. heartbeat, ping or trace-route using time related information in packets, e.g. by adding timestamps
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2215/00—Reducing interference at the transmission system level
    • H04B2215/064—Reduction of clock or synthesizer reference frequency harmonics
    • H04B2215/065—Reduction of clock or synthesizer reference frequency harmonics by changing the frequency of clock or reference frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Cardiology (AREA)
  • General Health & Medical Sciences (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Optical Communication System (AREA)
KR1020167031163A 2014-05-08 2014-05-08 통신 네트워크에서 전파 지연을 결정하기 위한 방법 및 장치 KR20160143773A (ko)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2014/059417 WO2015169363A1 (en) 2014-05-08 2014-05-08 Method and apparatus for determining propagation delay in a communications network

Publications (1)

Publication Number Publication Date
KR20160143773A true KR20160143773A (ko) 2016-12-14

Family

ID=50819717

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020167031163A KR20160143773A (ko) 2014-05-08 2014-05-08 통신 네트워크에서 전파 지연을 결정하기 위한 방법 및 장치

Country Status (5)

Country Link
US (2) US9948419B2 (es)
EP (1) EP3140957A1 (es)
KR (1) KR20160143773A (es)
MX (1) MX2016014037A (es)
WO (1) WO2015169363A1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10732475B2 (en) * 2016-11-01 2020-08-04 Innolux Corporation Thin film transistor substrate and display device using the same

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9948419B2 (en) * 2014-05-08 2018-04-17 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for determining propagation delay in a communications network
US9872189B2 (en) * 2016-03-31 2018-01-16 Corning Optical Communications Wireless Ltd Systems and methods for determining asymmetric downlink and uplink propagation delays in a wireless distribution system (WDS) for more accurately determining propagation delay
IT201700006409A1 (it) * 2017-01-20 2018-07-20 Teko Telecom S R L Apparecchiatura radio con architettura ridondante automatica
CN108989105B (zh) * 2018-07-16 2021-09-07 创新先进技术有限公司 传播路径图生成方法、装置及服务器
EP3963898A1 (en) 2019-04-29 2022-03-09 Telefonaktiebolaget LM Ericsson (publ) Method and apparatus for controlling transmission of an upstream packet traffic in a tdm pon-based fronthaul
US11425013B2 (en) * 2019-10-17 2022-08-23 Ii-Vi Delaware, Inc. Optical link time-of-flight and traffic latency determination using optical transceiver
US11431425B2 (en) 2020-09-24 2022-08-30 Corning Research & Development Corporation Measuring an end-to-end delay(s) in a distributed communications system
WO2023192190A1 (en) * 2022-03-30 2023-10-05 Commscope Technologies Llc Systems and methods for geolocation of user equipment

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6243369B1 (en) * 1998-05-06 2001-06-05 Terayon Communication Systems, Inc. Apparatus and method for synchronizing an SCDMA upstream or any other type upstream to an MCNS downstream or any other type downstream with a different clock rate than the upstream
US7505688B2 (en) * 2002-06-04 2009-03-17 Finisar Corporation Optical transceiver
US7072432B2 (en) * 2002-07-05 2006-07-04 Meshnetworks, Inc. System and method for correcting the clock drift and maintaining the synchronization of low quality clocks in wireless networks
US9337948B2 (en) * 2003-06-10 2016-05-10 Alexander I. Soto System and method for performing high-speed communications over fiber optical networks
US7602873B2 (en) * 2005-12-23 2009-10-13 Agilent Technologies, Inc. Correcting time synchronization inaccuracy caused by asymmetric delay on a communication link
US8208815B1 (en) * 2006-11-30 2012-06-26 Marvell International Ltd. Bit accurate upstream burst transmission phase method for reducing burst data arrival variation
US8873947B2 (en) * 2007-09-05 2014-10-28 Alcatel Lucent Method and apparatus for determining fiber characteristics in an optical communication network
KR20090032306A (ko) * 2007-09-27 2009-04-01 한국전자통신연구원 네트워크상의 타임 동기화 시스템 및 방법
US8045858B2 (en) * 2008-07-24 2011-10-25 The Boeing Company Methods and systems for providing full avionics data services over a single fiber
US8526333B2 (en) * 2009-02-09 2013-09-03 Abb Research Ltd. Method for detecting network asymmetrical status and asymmetrical communication channels for power system
RU2550149C2 (ru) 2010-10-13 2015-05-10 Телефонактиеболагет Л М Эрикссон (Пабл) Определение асимметрий в сети связи
US8576778B2 (en) * 2011-01-27 2013-11-05 Telefonaktiebolaget L M Ericsson (Publ) Transfer of synchronization in a hybrid global satellite packet network system
US8600239B2 (en) * 2011-09-26 2013-12-03 Symmetricom Precise clock synchronization over optical fiber
US8738042B2 (en) * 2011-10-12 2014-05-27 Qualcomm Incorporated Methods, systems, and devices for determining a closest base station to a multi-mode mobile device
US8599827B2 (en) * 2011-10-21 2013-12-03 Telefonaktiebolaget Lm Ericsson (Publ) Methods and apparatuses for maintaining synchronization between a radio equipment controller and an item of radio equipment
EP2850749B1 (en) * 2012-05-16 2017-11-29 Telefonaktiebolaget LM Ericsson (publ) Determining properties of an optical communications path in an optical communications network
US8842994B2 (en) * 2012-05-24 2014-09-23 Telefonaktiebolaget L M Ericsson (Publ) Distributing clock synchronization information within an optical communications network
US9628259B2 (en) * 2012-05-24 2017-04-18 Telefonaktiebolaget L M Ericsson (Publ) Distributing clock synchronization information within an optical communications network
US9584218B2 (en) * 2012-11-15 2017-02-28 Telefonaktiebolaget Lm Ericsson (Publ) Method and arrangement for monitoring optical transmission lines
US20140348182A1 (en) * 2013-05-22 2014-11-27 Iii Holdings 2, Llc Time synchronization between nodes of a switched interconnect fabric
US9948419B2 (en) * 2014-05-08 2018-04-17 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for determining propagation delay in a communications network
US9166881B1 (en) * 2014-12-31 2015-10-20 Contact Solutions LLC Methods and apparatus for adaptive bandwidth-based communication management
EP3357285B1 (en) * 2015-10-02 2021-07-21 Telefonaktiebolaget LM Ericsson (PUBL) Synchronizing clocks in a communications network

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10732475B2 (en) * 2016-11-01 2020-08-04 Innolux Corporation Thin film transistor substrate and display device using the same

Also Published As

Publication number Publication date
US20180205478A1 (en) 2018-07-19
EP3140957A1 (en) 2017-03-15
US9948419B2 (en) 2018-04-17
US10404392B2 (en) 2019-09-03
WO2015169363A1 (en) 2015-11-12
US20170180070A1 (en) 2017-06-22
MX2016014037A (es) 2017-02-14

Similar Documents

Publication Publication Date Title
US10404392B2 (en) Method and apparatus for determining propagation delay in a communications network
US11825433B2 (en) Synchronizing multiple-input/multiple-output signals in distributed antenna systems
US7047028B2 (en) Optical fiber coupling configurations for a main-remote radio base station and a hybrid radio base station
EP2828988B1 (en) Wdm link for radio base station
US10231037B2 (en) Optical burst transport network, node, transmission method and computer storage medium
KR101961008B1 (ko) 광 버스트 전송망 노드의 타임슬롯 동기 트레이닝 방법, 노드 기기 및 네트워크
US9794657B1 (en) System and method for optical switching
US10257595B2 (en) PTP transparent clock system upgrade solution
US20190305869A1 (en) Add/drop multiplexer, network system, transmission method, non-transitory computer readable medium, and management device
US10243722B2 (en) Optical interconnecting network architecture
JP6152225B2 (ja) Ｗｄｍ／ｔｄｍ−ｐｏｎシステム及びその送信開始時刻補正方法
US10044462B2 (en) Optical ring network
JP6449060B2 (ja) 波長分離多重装置及び光通信システム並びに波長分離多重方法
CN108141345A (zh) 传输系统、传输方法以及传输装置
JP5567748B2 (ja) 信号を送信ノードから複数の受信ノードに送信する通信システム、ノード、及び方法
JP2018098556A (ja) 光リングネットワークシステム及びそのパス制御方法
JP2001346235A (ja) 光通信方法
JP2016213770A (ja) 光信号中継装置、光通信システムおよび光信号中継方法
Hattori et al. Method to share a burst-mode receiver between continuous-and burst-mode transmitter for VM migration of cloud edge
Eiselt et al. Optical technologies in support of 5G
WO2022053133A1 (en) Lambda tuned disaggregated optical time domain reflectometry
JP2018037958A (ja) 通信方法及び通信システム

Legal Events

Date Code Title Description
A201 Request for examination
WITB Written withdrawal of application